it's sufjan. maybe not constantly touring and putting out albums but every time he does either it has so much thought and planning put into it. would rather someone play 5 shows a year like his at the brighton dome last year than tour constantly.

It's obviously Wiley or someone. He puts out 100 or more tracks every year. In the past year he has toured twice, released 3 mixtapes, an EP and 2 studio albums. If you were to go back just 2 years that would include the time he have away 5 zip files full of material. He must put out well over a hundred tracks every year.

...I heard an interview with him recently where he said that he approached music as a 9 to 5, Monday to Friday job. Which sounds reasonable, what with the 99% perspiration 1% inspiration idea.
Similarly, from reading Mark E Smith's biography he also views being a musician as something to be worked at. Hence why there is an album every year, with at least one tour (where they don't play the same venues/towns every time), and usually s stylistic shift.